| 发明名称 |
VIBRATORY DIAPHRAGM FOR ACOUSITIC DEVICE |
| 摘要 |
<p>PURPOSE:To improve the reproducing characteristics of a low sound together with the sound quality by molding a specific copolymer of polyester-polyether block or a compound composed mainly of the copolymer.</p> |
| 申请公布号 |
JPS53137129(A) |
申请公布日期 |
1978.11.30 |
| 申请号 |
JP19770052262 |
申请日期 |
1977.05.07 |
| 申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
MURATA KOUSAKU;TAKAYAMA SATOSHI;YASHIRO MITSURU |
| 分类号 |
C08G63/672;C08J5/00;G10K13/00;H04R7/02;(IPC1-7):04R7/02 |
主分类号 |
C08G63/672 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
